Automatic latch



Jan. 119 1926. l 1,570,135

G. c. EMMERT l Allround LATCH Filed March 8. 1924 INVENToR bbmk f lWww-rATTORNEYS Patented Jan. 19, 1926.

UNITED STATES PATENT OFFICE.

GEORGE o. vnltUMIERT, F MOUNT MORRIS, ILLINOIS.

AUTOMATIC LATCH.

Application iii-ea March 9, 1924. Vseriai No. 697,892.

To all whom t may concern: 8 in the door 1. It will be observed from Beit known that I, Gnoncr. GEMMERna this construction that the bolt 5 maybe actucitizen of the United States, and a resident ated from eitherside of the door 1. of Mount Morris, county of Ogle, State The bolt iscarried by a casing 9. A

5 of Illinois, have invented a new and useful spring 10 bears against awasher'11, and a 60 Improvement in Automatic Iiatches,` of pin 12 thatare carried by the bolt and also which the following is a yfull, clear,and eX- bears against one end of the casing 9. This act description.spring is adapted to yieldably hold the bolt My invention relates toimprovements in in the recess 4.

automatic latches, and it consists in the com- The looking device forholding the bolt 05 binations, constructions, and arrangements inretarded position consists in a leaf spring herein described andclaimed. f f 13 that has a portion thereof bent into a An object of Amyinvention is to provide groove 14 (see Figure 3), this groove being anautomatic latch which is an improvement adapted to receive the shankl ofthe bolt 5.

15 over the patented orm of my device, No. The walls of the grooves 14have recesses 15 70 846,651, patented March 12, 1907. In the thereinthat receive the lugs 16 on the bolt patented form of the vdevice Ishowed a 5. It will be noted from Figure 2 of the latch in which thespring bolt was'automatdrawings thatthe wall 17 of the recess 15 icallyreleased by a spring catch, when this 1s shorter than the wall 18. Itwill further 20 catch struck the door Jframe. In that form be notedthat'the cam edge 19 extends from 75 of the device I also showed thebolt retainthe recess 15 to the body of the spring 13. ing catch asbeing disposed eXteriorly of The leaf spring 13 tends to move the groovethe casing. The principal object of this 14 ntO engagement with the bolt5. present device is to provide a catch that is From the foregoingdescription of the disposed within the casing and is thus provariousparts of the device, the operation 80 teeted, thereof may be readilyunderstood. In Fig.

A 'further object of my invention is to 2 I have shown the bolt 5 movedinto open provide a latch in `hich the handle projects position by thedotted lines in this figure. through the door, whereby the latch may Asthe bolt is moved from the full line pobe operated from either side ofthe door. sition into the dotted line position, the lugs S5 A furtherobject of my invention is to v16 will engage with the cam edges 19 andprovide a device of the type described will depress the groove-shapedmember 14 which is simple in construction, and durable until the lugsare received in the recesses 15. and etiicient for the purpose intended.y The portion of the leaf spring that bears Other objects and advantageswill appear against the stop 3 will now move the door 90 in thefollowing specification, and the novel from the stop and will also movethe groovefeatures of the invention will be particularly shaped member14 into engagement with the ointed out in the appended claims. bolt 5,whereby the recess 15 will receive the My invention is illustrated inthe accomlugs 16. The parts of the device will now panying drawings,Jforming part of this assume the position shown in dotted lines 95application, in which in Figure 2. The door may now be opened Figure 1is a plan view of the device, y in the ordinary manner. Figure 2 is asection along the line 2-2 In closing the door, it is merely necessaryof Figure 1, and to swing the door so as to cause it to strike Figur-e 3is a section along the line 3-3 of the stop 3. The portion of the leafspring 100 Figure 2. 13 that projects beyond the casing 9 will Incarrying out my invention I make use strike the stop 3 and will move thegrooveof a. door 1 and a door trame 2. The frame shaped portion 14 fromthe position shown 2 has astop 3 against which the door 1 in Figure 3into the full line position in Figabuts when the door 1s in closedposition. ure 2. This movement releases the lugs 16 105 The stop 3 has arecess 4 that is adapted to and permits the spring 10 to move the boltreceive the tree end of the spring-pressed into the recess 4. The dooris now locked bolt 5. As clearly shown in Figure 2, the in closedposition. bolt 5 is provided with a handle 6 that has The device isextremely simple in cona portion 7 projecting through `an ope-ningstruction -and provides .a novel means for 110 CII automatically lockingthe door When it is swung into closed position. As heretofore stated,the principal diii'erence in the present device and the patented devicelies in the fact that the groove-shaped member lei takes the place ofthe locking dog 22 in the patented device, and is disposed inside ol thecasing instead o'l exterior of the casing, as shown in the patenteddevice.

I claim:

l. An automatic latch comprising` a casing, a spring pressed boltslidably carried by said casing, lugs carried by said bolt, a boltretaining member having a groove adapted to receive said bolt, the Walisof said groove 'having notches therein, aid notches being adapted toreceive said lugs to hold said bolt in retracted position, saidretaining member having a portion projecting beyond said casing, thisportion being swung into operative position when said lugs are receivedin said notches.

2. An automatic latch comprising a casing, said casing being constructedso as to be secured to a door, a spring-pressed bolt slidably carried bysaid casing, lugs carried by said bolt, said bolt being provided With ahandle, a portion of said handle extending through an opening in thedoor, a bolt-retaining member having a `groove adapted to tu receivesaid bolt, the Walls ot said groove having notches therein, said notchesbeing adapted to receive said lugs to hold said bolt in retractedposition, and stop members `formed by the Walls ot said groove, saidrefi by said bolt is held in retracted lposit-ion, and

stop members carried by said bolt retaining member for limiting themovement ot said bolt in one direction said bolt retaining member beingAmovable to release said bolt. GEORGE C. EMMERT.

